Answer:
the following is not a Metamorphic agent is lithification
D. All 3..................................
saliva in mouth
pepsin,hcl,and mucus are responsible for digestion of food
The respiratory system and digestive system both use the throat, also known as the pharynx.
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The answer is muscles and glands.
Neurotransmitters are endogenous chemicals that enable neurotransmission. It is a type of chemical messenger which transmits signals across a chemical synapse, such as a neuromuscular junction, from one neuron to another "target" neuron, muscle cell, or gland cell.